大佬,为什么我frontier4.1和stata17得出的结果不一样,求救🙏。 frontier y x1 x2 x3,cost这是stata指令。下面是frontier指令 1 1=ERROR COMPONENTS MODEL, 2=TE EFFECTS MODEL
eg1.dta DATA FILE NAME
eg1.out OUTPUT FILE NAME
2 1=PRODUCTION FUNCTION, 2=COST FUNCTION
N LOGGED DEPENDENT VARIABLE (Y/N)
31 NUMBER OF CROSS-SECTIONS
1 NUMBER OF TIME PERIODS
31 NUMBER OF OBSERVATIONS IN TOTAL
3 NUMBER OF REGRESSOR VARIABLES (Xs)
n MU (Y/N) [OR DELTA0 (Y/N) IF USING TE EFFECTS MODEL]
n ETA (Y/N) [OR NUMBER OF TE EFFECTS REGRESSORS (Zs)]
n STARTING VALUES (Y/N)
IF YES THEN BETA0
BETA1 TO
BETAK
SIGMA SQUARED
GAMMA
MU [OR DELTA0
ETA DELTA1 TO
DELTAP]
NOTE: IF YOU ARE SUPPLYING STARTING VALUES
AND YOU HAVE RESTRICTED MU [OR DELTA0] TO BE
ZERO THEN YOU SHOULD NOT SUPPLY A STARTING
VALUE FOR THIS PARAMETER.
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